PIM ni iki

PIM, izwi kandi nka Passive Intermodulation, ni ubwoko bwo kugoreka ibimenyetso.Kubera ko imiyoboro ya LTE yunvikana cyane kuri PIM, uburyo bwo kumenya no kugabanya PIM yakiriwe neza cyane.

PIM ikorwa no kutavanga umurongo uvanze hagati yinshuro ebyiri cyangwa nyinshi zabatwara, kandi ibimenyetso bivamo birimo imirongo yinyongera itifuzwa cyangwa ibicuruzwa bya intermodulation.Nkuko ijambo "pasive" mwizina "passiyo intermodulation" risobanura kimwe, kuvanga hejuru kutavanze umurongo bitera PIM ntabwo birimo ibikoresho bikora, ariko mubisanzwe bikozwe mubikoresho byibyuma nibikoresho bifitanye isano.Inzira, cyangwa ibindi bice bigize pasiporo muri sisitemu.Impamvu zitera kuvanga umurongo zishobora kubamo ibi bikurikira:

• Inenge mu guhuza amashanyarazi: Kubera ko ku isi nta buso butagira inenge ku isi, hashobora kubaho ahantu hafite ubucucike buri hejuru mu turere duhuza hagati y’imiterere itandukanye.Ibi bice bibyara ubushyuhe kubera inzira ntarengwa yo kuyobora, bikavamo impinduka mukurwanya.Kubwiyi mpamvu, umuhuza agomba guhora yiziritse neza kuri torque yagenewe.

Nibura byibuze igice kimwe cyoroshye cya oxyde kibaho hejuru yicyuma kinini, gishobora gutera ingaruka za tunnel cyangwa, muri make, biganisha kugabanuka kumwanya uyobora.Abantu bamwe batekereza ko iki kintu gishobora gutanga ingaruka za Schottky.Niyo mpanvu ibyuma byangiritse cyangwa ibisenge byumye byegereye umunara wa selire birashobora gutera ibimenyetso bikomeye byo kugoreka PIM.

• Ibikoresho bya ferromagnetiki: Ibikoresho nkicyuma birashobora kubyara PIM nini, bityo ibikoresho nkibi ntibigomba gukoreshwa muri sisitemu ya selile.

Imiyoboro idafite insinga imaze kuba ingorabahizi nka sisitemu nyinshi kandi ibisekuruza bitandukanye bya sisitemu byatangiye gukoreshwa kurubuga rumwe.Iyo ibimenyetso bitandukanye bihujwe, PIM, itera kwivanga kubimenyetso bya LTE, irabyara.Antennasi, duplexer, insinga, umuyoboro wanduye cyangwa urekuye, hamwe nibikoresho bya RF byangiritse nibikoresho byuma biri hafi cyangwa muri sitasiyo fatizo ya selile bishobora kuba isoko ya PIM.

Kubera ko kwivanga kwa PIM gushobora kugira ingaruka zikomeye kumikorere ya LTE, abakoresha simsiz hamwe naba rwiyemezamirimo baha agaciro gakomeye kubipimo bya PIM, aho bituruka no guhagarika.Inzego zemewe za PIM ziratandukanye kuri sisitemu.Kurugero, ibisubizo byikizamini cya Anritsu byerekana ko iyo urwego rwa PIM rwiyongereye kuva kuri -125dBm rukagera kuri -105dBm, umuvuduko wo gukuramo wagabanutseho 18%, mugihe uwambere nuwanyuma Indangagaciro zombi zifatwa nkurwego rwa PIM rwemewe.

Nibihe bice bigomba gupimwa kuri PIM?

Muri rusange, buri kintu kigira ikizamini cya PIM mugihe cyo gushushanya no gutanga umusaruro kugirango urebe ko kidahinduka isoko ikomeye ya PIM nyuma yo kwishyiriraho.Mubyongeyeho, kubera ko gukosora kwihuza ari ingenzi kugenzura PIM, inzira yo kwishyiriraho nayo ni igice cyingenzi cyo kugenzura PIM.Muri sisitemu ya antenne yagabanijwe, rimwe na rimwe birakenerwa gukora ibizamini bya PIM kuri sisitemu yose kimwe no gupima PIM kuri buri kintu.Uyu munsi, abantu bagenda bemera ibikoresho byemewe na PIM.Kurugero, antene iri munsi ya -150dBc irashobora gufatwa nkubahiriza PIM, kandi ibisobanuro nkibi bigenda bikomera.

Usibye ibi, inzira yo gutoranya urubuga rwakagari, cyane cyane mbere yurubuga rwa selire na antenne, hamwe nicyiciro cyakurikiyeho, nabyo birimo gusuzuma PIM.

Kingtone itanga inteko ntoya ya PIM, ihuza, adapteri, imashini ihuza imirongo myinshi, imashini ihuza imirongo, duplexers, ibice, guhuza hamwe na antene kugirango byuzuze ibisabwa bitandukanye bijyanye na PIM.